Charles Ellicott Commentary 2 Chronicles 10:2

"And it came to pass, when Jeroboam the son of Nebat heard of it, (for he was in Egypt, whither he had fled from the presence of king Solomon,) that Jeroboam returned out of Egypt." — 2 Chronicles 10:2 (ASV)

Who was in Egypt. —Really a parenthesis, And it came to pass, when Jeroboam the son of Nebat heard (now he was in Egypt, where he had fled from the face of Solomon the king), that Jeroboam returned from Egypt. The chronicler has omitted to say he was still in Egypt (‘ôdennû, Kings), because he has not alluded before to his flight there. (See 1 Kings 11:26–40.)

That Jeroboam returned out of Egypt. —Kings continues the parenthesis, and Jeroboam dwelt in Egypt. The words dwelt and returned are spelt with the same letters in Hebrew, the difference being one of pointing only.